Composition for caring for the keratin materials

Abstract

Provided herein is a bi-phase composition comprising: (A) a continuous aqueous phase; (B) an oil phase comprising an unstable active agent, and (C) hydrophobic particles adhered on the surface of the oil phase.

1 . A bi-phase composition comprising:
 (A) a continuous aqueous phase;   (B) an oil phase comprising an unstable active agent, and   (C) hydrophobic particles adhered on the surface of the oil phase.   
     
     
         2 . The composition according to  claim 1 , further comprising an antioxidant, either in the aqueous phase (A) and/or in the oil phase (B). 
     
     
         3 . The composition according to  claim 1 , wherein the aqueous phase (A) comprises water in an amount ranging from 65% to 99% by weight relative to the total weight of the composition. 
     
     
         4 . The composition according to  claim 1 , wherein the oil phase (B) comprises a substance selected from the group consisting of lower alkanes, fatty alcohols, fatty acid esters, fatty alcohol esters, oils, non-silicone waxes, and silicone oils. 
     
     
         5 . The composition according to  claim 1 , wherein the oil phase (B) is present in the composition from 5% to 25% by weight relative to the total weight of the composition. 
     
     
         6 . The composition according to  claim 1 , wherein the unstable active agent is selected from the group consisting of retinoids, vitamin B group, vitamin D, vitamin K, nicotinic acid, folic acid, pantothenic acid, ferulic acid, ascorbic acid 2-glucoside, dipalmiroyl hydroxyproline, and a salt or ester thereof. 
     
     
         7 . The composition according to  claim 1 , wherein the unstable active agent is selected from the group consisting of retinoic acid, retinol (vitamin A) and its esters. 
     
     
         8 . The composition according to  claim 1 , wherein the unstable active agent is retinol, retinyl acetate, or retinyl palmitate. 
     
     
         9 . The composition according to  claim 1 , wherein the hydrophobic particles (C) are in form of spherical particles or lamellar particles. 
     
     
         10 . The composition according to  claim 1 , wherein the hydrophobic particles (C) are selected from the group consisting of starches, talc, hydrophobic cellulose and derivatives thereof, hydrophobic silica, polyamide powders, and hydrophobic pigments. 
     
     
         11 . The composition according to  claim 1 , wherein the hydrophobic particles (C) are present in an amount of from 0.001% to 5% by weight relative to the total weight of the composition. 
     
     
         12 . The composition according to  claim 1 , further comprising an antioxidant selected from the group consisting of a natural exogenous phytochemical antioxidant, a flavonoid, a vitamin, tocopherols, tocotrienol phenol, carotenoid, anthocyanin, dihydrochalcone, phenylpropanoid, chalcone, curcuminoid, tannin, stilbenoid, coumarin, carotenoid, butylated hydroxy toluene (BHT), butylated hydroxy anisole (BHA), tert-butyl hydroquinone (TBHQ), tetra-di-t-butyl hydroxyhydrocinnamate (Tinogard TT), diethylhexyl syringylidenemalonate and a mixture thereof. 
     
     
         13 . The composition according to  claim 13 , wherein the antioxidant is present in an amount of from 0.2% to 10% by weight relative to the total weight of the composition. 
     
     
         14 . A package comprising:
 1) a container; and   2) the bi-phase composition according to  claim 1  within the container;   wherein the aqueous phase (A) and the oil phase (B) is placed in such a way that when the container is opened, the oil phase (B) is separate from environment by the aqueous phase (A).   
     
     
         15 . The package according to  claim 14 , wherein the oil phase (B) is placed under the aqueous phase (A), or the oil phase (B) is dispersed within the aqueous phase (A). 
     
     
         16 . The composition according to  claim 1 , wherein the oil phase (B) comprises an oils which is a mineral, plant, animal or synthetic non-silicone oil. 
     
     
         17 . The composition according to  claim 1 , wherein the unstable active agent is selected from the vitamin B group and is selected from the group consisting of vitamin B5 (panthenol), vitamin B3 (niacinamide), vitamin B1 and vitamin B2. 
     
     
         18 . The composition according to  claim 1 , wherein the unstable active agent is a retinol ester and is selected from the group consisting of retinyl propionate, retinyl acetate and retinyl palmitate.